Culoptila pararusia, Blahnik, Roger J. & Holzenthal, Ralph W., 2006

Blahnik, Roger J. & Holzenthal, Ralph W., 2006, Revision of the genus Culoptila (Trichoptera: Glossosomatidae), Zootaxa 1233, pp. 1-52 : 34-35

Culoptila pararusia , new species

Fig. 29 A, B

This species is obviously very closely related to Culoptila rusia and resembles that species in the shape of tergum X, which is moderately elongate, curved, and acutely tapered apically. On average, the length of tergum X is slightly greater in C. pararusia (but not nearly so long as in C. hamata of Costa Rica). Primary differences are in the shape of the phallic spines, which are stout, straight, and subequal in length in C. pararusia , and always with 1 spine strongly curved in C. rusia and with the other elongate and very narrowly tapered apically. Also, the inferior appendages are acute apically in C. rusia and bluntly rounded in C. pararusia . The differences do not seem to be strictly geographical, since the distributions of the 2 species overlap.

Adult. Length of forewing: male 2–2.6 mm.; female 2.2–2.8 mm. Color yellowishbrown in alcohol, appendages paler. Mesothorax of male not noticeably modified; mesoscutal wart short, heart­shaped. Mesothoracic tegulae of male flattened and weakly cupped, distinctly enlarged; tegular setae long; tegular gland short, pleated, concertinalike.

Male genitalia. Sternum VI process short, subtruncate. Tergum IX ventral margin subtruncately rounded, slightly produced posteroventrally. Inferior appendages short, subtruncate apically. Tergum X long, length greater than width, and distinctly curved, apex in ventral view acute; ventrolateral processes with apices incurved and posteriorly bent, bend prominent and strong, approximately right angle; apices of lateral processes much narrowed, inner margin of apex bluntly rounded, not acute. Phallobase large, broadly rounded in lateral view, apicodorsal projection elongate, straight, apex subacute. Phallic apparatus with 2 phallic spines, both elongate, about 3/4 length of phallobase, narrow, straight, subequal.

Material examined

Holotype male: MEXICO: Chiapas: trib. to Rio de Teapa on Mex.195, 1.5 mi. N Ixhuatan, 23.xii.1983 (Hamilton, Holzenthal, & Kovach) — ( NMNH).

Paratypes: MEXICO: Chiapas: trib. to Rio de Teapa on Mex.195, 1.5 mi. N Ixhuatan, 23.xii.1983 (Hamilton, Holzenthal, & Kovach) — 6 males ( NMNH); Ixtacomitan, 10.xii.1985 (R. Barba) — 6 males, 1 female ( NMNH); 100 males, 2 females ( UNAM); Oaxaca: San Mateo, Yetla Arroyo Virgen, km 50, Rta 175, 10.vii.1996 (Barba & Rojas) — 2 males ( UNAM); Veracruz: Río Tacolapan, 25–26.vii.1966 (Flint & Ortiz) — 276 males, 942 females ( NMNH), 10 males, 10 females ( UMSP); Fortin de las Flores, 22.v.1965 (Rabago) — 4 males ( NMNH); Barranca de Metlac, ca. Fortín de las Flores, 30.iii.1976 (J. Bueno­Soria) — 1 male ( UNAM); Río Tlacotalpan, km 551, 26.vii.1966 (Flint & Ortiz) — 8 males, 14 females ( UNAM); Los Tuxtlas, Río La Palma, ca. Estación de Biologica, 14.ix.1978 (J. Bueno­Soria) — 1 male ( UNAM); Río Tecolapa, ca. Santiago Tuxtla, 28.vii.1976 (J. Bueno­Soria) — 65 males, 1 female ( UNAM).

Figures

FIGURES 29 – 31. Male genitalia. 29. Culoptila pararusia, new species: 29 A—lateral; 29 Bventral. 30. Culoptila plummerensis, new species: 30 A—lateral; 30 B—ventral. 31. Culoptila rusia Mosely: 31 A—lateral; 31 B—ventral.